US PATENT SUBCLASS 53 / 523
.~.~ Compacting or stretching

Current as of: June, 1999
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53 /   HD   PACKAGE MAKING

111 R  DF  WITH CONTENTS TREATING {4}
113  DF  .~ Reshaping {7}
523.~.~ Compacting or stretching {6}
524  DF  .~.~.~> Mattress filling
525  DF  .~.~.~> By agitation
526  DF  .~.~.~> Compressing with or through cover
527  DF  .~.~.~> Compressing contents within preformed receptacle
528  DF  .~.~.~> Compressing while engaging contents with wrapper or band
529  DF  .~.~.~> Compressing before packaging {1}

DEFINITION

Classification: 53/523

Compacting or stretching:

(under subclass 113) Apparatus in which the contents material is subjected to mechanical forces which (a) crowd portions of the contents into a more confined space or which (b) contract or elongate the contents material within its elastic limit.

SEE OR SEARCH THIS CLASS, SUBCLASS:

114, for apparatus for encasing coil springs.

436, for corresponding methods.

SEE OR SEARCH CLASS

100, Presses, appropriate subclasses for compacting apparatus, per se.

141, Fluent Material Handling With Receiver or Receiver Coacting Means,

71+, for compacting fluent materials in receivers.